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The hysteresis loss in a certain electrical apparatusoperating at it's rated voltage and rated frequency of 240 V and 25Hz is 846 W. Determine the hysteresis loss if the apparatus isconnected to a 60 Hz source whose voltage is such as to cause theflux density to be 62 percent of it's rated value. Assume that theSteinmetz exponent is 1.4.
Draw a circuit diagram to show how the CT, VT and meters are connected into the load circuit. Neglecting instrument and transformer errors, calculate the load kVA and power factor if the voltmeter, ammeter and wattmeter indicate values of 200 V, 2..
Design a DC power supply that provides -95v +/- 5v to a 2 amp load (energy absorber). The input source is a 100 volt peak sinusoid, 60 Hz. You may use any circuit element we've studied. State the values of all circuit elements
Then find the total energy stored in the battery before it is connected to the bulb. Determine the total amount of charge that has pessed through the wires that connect the battery and the bulb.
The required exposure energy for a positive photoresist is 140 mJ/cm2 and for a negative photoresist is 9 mJ/cm2. Assuming negligible times for loading and unloading wafers, compare the wafer throughput for positive photoresist and negative photor..
In the latest release of the game there are 8 characters the user can choose from. The user can choose one character from the 8 characters by moving the controller joystick up, down, left, or right. Each character has a 3 bit code that is sent to ..
A single phase 220V system draws a current of 15A at a lagging power factor of 0.8. Calculate the value of a capacitor that can be used to improve the power factor of this system to 0.95 lagging.
Consider this follower to be driven by the output of a differential amplifier of gain 100 whose positive-input terminal is connected to the input signal source vs and whose negative-input terminal is connected to the emitters of the follower.
Design a diode voltage regulator to supply 1.5V to a 150-ohm load. Use two diodes specified to have a 0.7-V drop at a current of 10mA. The diodes are to be connected to a +5-V supply through a resistor R.
If the per-phase line loss in a 60-km-long transmission line is not to exceed 60kW while it is delivering 100A per phase, compute the required conductor diameter, if the resistivity of the conductor material is 1.72*10^-8 Ohm-meters.
Electrons are in random motion in a fixed region in space .During 1 sec interval, the probability of finding an electron in a subregion of volume 10^(-15) m3 is 0.23. What volume charge density , appropriate for such time durations, should be assig..
An amplifier is to have an input of 100watts. Its effeciency is 75%, what is the maximum ambient temperature wherein this amplifier may be placed with a maximum junction temperature of 200degC and a junction to case thermal resistance.
A magnetic pickup coil is being used to make measurements which areproportional to the time derivative of the magnetic flux density, dB/dt. You wishto integrate this signal to get the magnetic flux density, B.
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